Sindhu saw off Sim 21-13, 12-21, 21-14 in a 59-minute women's singles second-round match to register her third win over the Korean world number 34.
It was a smooth performance from Sindhu as she was hardly tested by the Taiwanese qualifier
Defending champion P V Sindhu stood just one step away from retaining her title after defeating Thailand's Ratchanok Inthanon in a lop-sided semi-final at the $ 350,000 India Open Super 500 tournament in New Delhi on Saturday.
Verma beat his Taiwanese opponent 21-18, 21-14.
This was the third title for the Indian duo -- they had clinched the Abu Dhabi Masters Super 100 and Nantes International Challenge this year.
Priyanshu Rajawat suffered a 13-21, 14-21, loss to Japan's Kanta Tsuneyama, while Aakarshi Kashyap went down 18-21, 10-21 to German Yvonne Li.
In mixed doubles, K Sai Pratheek and Tanisha Crasto prevailed 21-18, 21-14 over Macau's Leong Iok Chong and Weng Chi NG to make a winning start.
Indian challenge ends after Satwik-Chirag bow out in opening round of China Open
In the women's section, defending champion Unnati Hooda, national champion Anupama Upadhyaya, Ashmita Chaliha, Imad Farooqui Samiya, Tasnim Mir reached the pre-quarterfinals.
Srikanth, Prannoy enter pre-quarters; Aakarshi knocked out
HS Prannoy made an early exit from the Korea Open Super 500 tournament
Coaching is the toughest job: Saina Nehwal on her future
HS Prannoy, who occupies the 8th spot, is the best ranked Indian in the men's singles while Lakshya Sen and Kidambi Srikanth are placed 19th and 20th respectively.
A sensational run over the last two weeks has given wings to Ashwini Ponnappa's Olympics dreams, and the ace Indian shuttler now wants to continue her fine run in the upcoming bigger tournaments to stay on course for a trip to Paris.
The world number nine will play Hong Kong's fifth seed Angus Ng Ka Long in the last eight stage.
Satwiksairaj Rankireddy and Chirag Shetty achieved a career-best world number three
Vietnam Open: Simran-Ritika in quarters.
The selectors had also proposed to pick one pair each for men's and women's doubles and two mixed doubles combinations through a round-robin tournament format to decide the final standings.
B Sumeeth Reddy and Ashwini Ponnappa, however, suffered a 21-23, 21-13, 12-21 loss against Korean pair of Song hyun Cho and Lee Jung Hyun in their mixed doubles opening round.
Satwiksairaj Rankireddy and Chirag Shetty assured India of a men's doubles medal at the Badminton Asia Championships after 52 years after making it to the semi-finals in Dubai.
Two-time Olympic medallist P V Sindhu sailed into the quarter-finals in the singles event at the Badminton Asia Championships with an easy victory over China's Han Yue.
Indian Mithun Manjunath stunned fourth seed and world number seven Kean Yew Loh of Singapore in the opening round while PV Sindhu and Kidambi Srikanth secured straight-game wins.
He will next face sixth seed Li Shi Feng of China in the last-eight round.
Lakshya Sen, returning from a break, suffered a first round exit, while Treesa Jolly and Gayatri Gopichand entered the pre-quarters of the Asia Badminton Championship.
Sindhu is the only Indian to feature in the women's singles competition.
Prannoy reached the World Championships on previous two occassions.
The core of the team remains the same with HS Prannoy, Lakshya Sen and Satwiksairaj Rankireddy and Chirag Shetty in good form and the Indian team would hope the rub of the green also goes their way when it begins campaign on Thursday.
Lakshya Sen's woeful run continued as he made a first round exit
However, a tough contest awaits the former world No. 1 as he faces top seed Kenta Nishimoto of Japan next.
Manjunath will play Taipei's Yu Jen, who was lucky to progress after fifth seed Rasmus Gemke retired in the second game after pocketing the first.
London Olympics bronze medallist Saina Nehwal, on the other hand, moved one place to 31st.
Star Indian shuttlers PV Sindhu and Kidambi Srikanth will look to arrest their slump in form when they begin their campaign at the Australia Open badminton tournament in Sydney on Tuesday.
Besides Srikanth, the other players withdrawn are Ashwini Ponnappa, Ritika Rahul Thkar, Treesa Jolly, Mithun Manjunath, Simran Aman Singh and Khushi Gupta.
India's schedule at the Asian Games in Hangzhou on Monday, October 2.
It was yet another forgettable outing in Tokyo for Praneeth, following his struggles at last year's Olympic Games where he participated without a proper coach or physio to eventually bow out early.
Fresh from their Korea Open triumph, Satwiksairaj Rankireddy and Chirag Shetty will look to continue their dream run.
HS Prannoy becomes the first player to beat Tokyo Olympics gold medallist Victor Axelsen in full a match since March.
Lakshya Sen and Saina Nehwal made impressive starts at the Indonesia Masters Super 500 badminton tournament, advancing to the second round of men's and women's singles respectively with contrasting victories in Jakarta on Wednesday.
A former world no. 2, Sindhu has regained her place in the top 5 after three years. The former world champion from Hyderabad resumed her training on Monday after recovering from the injury.
Fellow Indian Kidambi Srikanth also jumped two places to sit at the 12th spot, while Lakshya Sen continued to be the best-placed Indian male shuttler at world number 9.
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